From d5826dd6002f23940458860701ce22fba9df2614 Mon Sep 17 00:00:00 2001 From: Jack Steiner Date: Wed, 17 Jun 2009 16:28:28 -0700 Subject: gru: add user request to explicitly unload a gru context Add user function to explicitly unload GRU kernel contexts from the GRU. Only contexts that are not in-use will be unloaded. This function is primarily for testing. It is not expected that this will be used in normal production systems. Signed-off-by: Jack Steiner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-gru/grufile.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers/misc/sgi-gru/grufile.c') diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c index bfc88d1b2a5b..e22012db239e 100644 --- a/drivers/misc/sgi-gru/grufile.c +++ b/drivers/misc/sgi-gru/grufile.c @@ -287,7 +287,6 @@ static void gru_init_chiplet(struct gru_state *gru, unsigned long paddr, gru_dbg(grudev, "bid %d, nid %d, gid %d, vaddr %p (0x%lx)\n", bid, nid, gru->gs_gid, gru->gs_gru_base_vaddr, gru->gs_gru_base_paddr); - gru_kservices_init(gru); } static int gru_init_tables(unsigned long gru_base_paddr, void *gru_base_vaddr) @@ -314,6 +313,7 @@ static int gru_init_tables(unsigned long gru_base_paddr, void *gru_base_vaddr) memset(gru_base[bid], 0, sizeof(struct gru_blade_state)); gru_base[bid]->bs_lru_gru = &gru_base[bid]->bs_grus[0]; spin_lock_init(&gru_base[bid]->bs_lock); + init_rwsem(&gru_base[bid]->bs_kgts_sema); dsrbytes = 0; cbrs = 0; @@ -426,6 +426,7 @@ static int __init gru_init(void) printk(KERN_ERR "%s: init tables failed\n", GRU_DRIVER_ID_STR); goto exit3; } + gru_kservices_init(); printk(KERN_INFO "%s: v%s\n", GRU_DRIVER_ID_STR, GRU_DRIVER_VERSION_STR); @@ -444,7 +445,7 @@ exit1: static void __exit gru_exit(void) { - int i, bid, gid; + int i, bid; int order = get_order(sizeof(struct gru_state) * GRU_CHIPLETS_PER_BLADE); @@ -453,10 +454,7 @@ static void __exit gru_exit(void) for (i = 0; i < GRU_CHIPLETS_PER_BLADE; i++) free_irq(IRQ_GRU + i, NULL); - - foreach_gid(gid) - gru_kservices_exit(GID_TO_GRU(gid)); - + gru_kservices_exit(); for (bid = 0; bid < GRU_MAX_BLADES; bid++) free_pages((unsigned long)gru_base[bid], order); -- cgit v1.2.1